Mark Walter Thiemann, P.A.C.
NPI 1386634046ActiveIndividual· Physician Assistant, Surgical· Cincinnati, OH
Physician Assistant, Surgical (P.A.C.) with Mercy Health Physicians Cincinnati Specialty Care LLC, practicing in Cincinnati, Ohio. 325 Medicare patients in 2024, $74,385 paid; all of their 291 Part D prescriptions were generic. Zimmer Biomet Holdings, Inc. reported $150.00 in payments in 2025, mostly food and beverage. Lists Mercy Health - Fairfield Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1386634046 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | P.A.C. |
| Sole proprietor | No |
| NPI issued | Oct 25, 2005 |
| Last updated in NPPES | Aug 19, 2024 |
| Certified by provider | Aug 19, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Surgical Primary | 363AS0400X | 50-00-0882 | OH |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Physician Assistant (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 325 |
|---|---|
| Services billed | 5,306 across 51 procedure codes |
| Paid by Medicare | $74,385 |
Part D prescriptions in 2024
| Prescriptions (claims) | 291 · 302 30-day fills |
|---|---|
| Patients | 161 |
| Total drug cost | $1,217 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 1993 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Mercy Health Physicians Cincinnati Specialty Care LLCCincinnati, OH · 349 clinicians
Hospital affiliations
- Mercy Health - Fairfield HospitalFairfield, OH
- Mercy Health - West HospitalCincinnati, OH
Industry payments (Open Payments)
- 2025$150.00 · 1 payment from 1 company
- 2024$1,647 · 5 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Zimmer Biomet Holdings, Inc. | $150.00 | 1 |
What the 2025 payments were for
- Food and Beverage$150.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 41 surgical physician assistants in Cincinnati · All surgical physician assistants in Ohio